Tough terrain calls for tough boots. The Bogs Whiteout Sparks are perfect for when you need serious help in the snow. Waterproof rubber upper crafted with 7mm Neo-Tech waterproof insulation. Comfort rated to -58 degreesF/-50 degreesC Over-the-calf silhouette with an allover print. Pull-on handles for easy on-and-off. Soft fleece lining with Max Wick to help keep your feet dry. Interior treated with DuraFresh biotechnology for anti-odor protection, providing a fresher foot environment. Algae-sourced EVA footbed. BioGrip slip-resistant outsole provides reliable traction. Imported. Measurements: Heel Height: 1 in Weight: 1 lb 7 oz Circumference: 16 in Shaft: 13 in Product measurements were taken using size 7, width B - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.